On the other hand Fred, it is very normal for all soft leaved plants, including the corkscrew vals, to die back on relocation. I have had corkscrew vals for decades in several of my tanks, its one of my favorites. Some years back when I converted some of my tanks to CO2, and planted one of them with corkscrew val, I ran into a big problem with these plants. Unlike the initial die-back and regrow, these vals would die-back every time for the next 3 months. Only patience helped me to leave them alone. Then finally they started to grow with the widest leaves I have seen on corkscrew vals.